Hello all,
Think I might have went down the rabbit hole a bit on this one, and looking for alternative thoughts - or at least confirmation that I'm on the right path.
It's been a while since I've looked at the likes of NEC 500, however looking at different aspects of an existing design, and what it would take to make it C1D2 compliant. One particular area I'm looking for clarification on is the applicability of the designation "nonincendive".
The reason I ask, there are various control components in this design (solenoids, proximity sensors etc.) that are already general purpose, however I'm looking into whether they could be considered nonincendive (I do need to dig further into the ANSI/ISA standards to check the criteria for this).
As an example, the solenoids themselves would classify as being allowed to be general purpose as they are not sliding or make/break (under 501.105 (B)(4), however they do use the DIN-style connectors on the housings, which I believe would then need to be compliant per 501.105 (B)(6) - so thinking I would need to further justify through "nonincendive" if I can, otherwise would need to explore further options e.g. IS barriers or switching out the solenoid itself to something else e.g. no connectors on it, C1D2 rated, or some other option.
With this, is it possible to make a justification / "self-assess" these components and therefore use them as-is, assuming they meet said criteria? Or do they need to be specially listed as such through UL and/or marked accordingly?
I'm coming from more of a background in ATEX where self-assessing is quite common, however getting a little bit down the rabbit hole in the requirements of the NEC and what is actually needed for this, so any kind of advice is welcome.
Thanks in advance all!
Think I might have went down the rabbit hole a bit on this one, and looking for alternative thoughts - or at least confirmation that I'm on the right path.
It's been a while since I've looked at the likes of NEC 500, however looking at different aspects of an existing design, and what it would take to make it C1D2 compliant. One particular area I'm looking for clarification on is the applicability of the designation "nonincendive".
The reason I ask, there are various control components in this design (solenoids, proximity sensors etc.) that are already general purpose, however I'm looking into whether they could be considered nonincendive (I do need to dig further into the ANSI/ISA standards to check the criteria for this).
As an example, the solenoids themselves would classify as being allowed to be general purpose as they are not sliding or make/break (under 501.105 (B)(4), however they do use the DIN-style connectors on the housings, which I believe would then need to be compliant per 501.105 (B)(6) - so thinking I would need to further justify through "nonincendive" if I can, otherwise would need to explore further options e.g. IS barriers or switching out the solenoid itself to something else e.g. no connectors on it, C1D2 rated, or some other option.
With this, is it possible to make a justification / "self-assess" these components and therefore use them as-is, assuming they meet said criteria? Or do they need to be specially listed as such through UL and/or marked accordingly?
I'm coming from more of a background in ATEX where self-assessing is quite common, however getting a little bit down the rabbit hole in the requirements of the NEC and what is actually needed for this, so any kind of advice is welcome.
Thanks in advance all!